Joining of SiC Ceramics by the Flash-Bonding Technique

• 作者: Mikito Kitayama Takuro Yoshitake Yoshio Ohta
• 来源期刊: 材料科学与化学工程(英文)
• 学科: 工学
• 关键词: SILICON CARBIDE Joining Flash-Bonding BOROSILICATE GLASS
• 年，卷（期）: 2020,（3）
• 页码范围: 52-65
• 页数: 14页
• 分类号: TQ1

摘要

Because Silicon carbide (SiC) ceramics have various excellent properties, the demand for larger and complicated shapes has been increasing. This paper introduces an innovative method that would not require a large furnace, and further, would minimize the production cost and the thermal history, namely the “flash-bonding” technique. The borosilicate glass with low thermal expansion coefficient, Pyrex glass, was selected as the brazing material. In this work, as-is or surface-oxidized SiC plates were joined using Pyrex glass as brazing material, and the reaction and wetting of Pyrex glass on as-is or surface-oxidized SiC plate were investigated. It was found that the protective film of the surface-oxidized SiC lowered the oxygen partial pressure, and hence, generated many pores in the interface.